How to convert hex to str - Flutter

[zhaobinglong]

link： https://pub.dev/packages/hex

    String hex = '001002';
    String str = '';
    List hexList = HEX.decode(hex);
    for(var i = 0; i < hexList.length; i++) {
        String str = String.fromCharCode(hexList[i]);
       str = str + str;
    }